Udara with distinct iD feature.
Two Udara species are similar in sharing a distinctive feature.
They both have two tornal spots in space 1b and none in space 1a.
Most Udara species have three tornal spots.
Both also lack submarginal spots( lunules0 on both wings.
Udara akasa.
Underside white & HW marginal spots w2hite.
Occassionally a small streak may be present in space 1b representing a third spot.
https://www.gbif.org/occurrence/2847201840
https://www.gbif.org/occurrence/2847200894
Example with a small mark at vein 1a.
https://www.gbif.org/occurrence/2847200893
https://www.inaturalist.org/observations/70015975
https://www.inaturalist.org/observations/105431006
the subspecies in Thailand is more distinctly three-spotted at the HW tornus.
https://yutaka.it-n.jp/lyc4/80790010.html
Udara akasa appears to be common in the highlands.
Udara selma.
U. selma is always two-spotted at the tornus & the HW marginal spot are rounder.
UnH strongly darker grey.
https://yutaka.it-n.jp/lyc4/80800010.html
https://upload.wikimedia.org/wikiped...maMUpUnAC1.jpg
https://www.inaturalist.org/observations/270446790
Added.
Udara toxopeusi.
Underside without submarginal spots & two hw tornal spots (as in U. akasa, selma.)
UnF postdiscal spots aligned in an arc.
https://www.gbif.org/occurrence/2847200195
https://www.gbif.org/occurrence/2847200193
Udara camenae.
This is very similar in lacking the submarginal spots/lunules but is three-spotted at the HW tornus.
https://www.gbif.org/occurrence/2847200820
https://www.gbif.org/occurrence/2847201836
Also similar to U. camenae (with 3 tornal spots)..
Udara albocaerulea.
https://nl.wikipedia.org/wiki/Udara#...fiMUpUnAC1.jpg
TL Seow: Cheers.
Celestrina lavendularis and Udara placidula.
These two are very similar and seem to have been much confused.
Celastrina lavendularis.
the key separate Celestrina based on the darker ground and prominent white rings around the spots.
However, in P. Malaysia there is only C. levandularis to contend with.
Underside ground darkish grey with prominent white rings around the spots.
UnH spot 7 and sub-basal spots very dark.
UnH submarginal lunulate line often rather pointy.
HW marginal spots often heavy.
Forms with smaller spots also occur.
https://yutaka.it-n.jp/lyc4/80870020.html
https://wingscales.com/Lycaenidae/Ce...laris-isabella
https://www.gbif.org/occurrence/2847200101
https://www.gbif.org/occurrence/2847199548
https://www.gbif.org/occurrence/2847199548
https://www.gbif.org/occurrence/4177487516
https://www.inaturalist.org/observations/181049771
Udara placidula.
Udara species care marked as in Celestrina.
U. placidula is greyer than U. dilecta and have HW spot 7 blacker and darker than the other postdiscal spots.
The general appearance is like C. lavendularis.
However the white rings are only weakly developed.
UpF male with a very narrow border.
HW submarginal lunules more rounded.
https://yutaka.it-n.jp/lyc4/80770010.html
https://thaibutterflies.com/Butterfl...ara-placidula/
https://commons.wikimedia.org/wiki/F...laFUpUnAC1.jpg
https://upload.wikimedia.org/wikiped...aMFUpUnAC1.jpg
https://www.inaturalist.org/observations/214331294
The two museum specimens have some problem.
1. This lack submarginal spots and look to be U. camenae.
https://www.gbif.org/occurrence/2847201798
2. The male upperside looks correct, but the UnH spot 7 is pale.
https://www.gbif.org/occurrence/2847201795
Added. found valid specimens.
https://www.gbif.org/occurrence/2847202355
https://www.gbif.org/occurrence/2847201800
https://www.gbif.org/occurrence/2847201794
Udara dilecta and Udara rona.
Udara cyma and Callenya lenya. Plautella.
These two are also similar in markings.
Udara cyma.
Wings with submarginal spots which are often thick.
HW spot 7 large and dark.
postdiscal spots arranged in a regular curve, almost aligned.
HW tornus with 3 spots. 2 in space 1b, & 1 in space 1a.
Ground darker.
https://www.gbif.org/occurrence/2847200156
https://www.gbif.org/occurrence/2847200158
Callenya lenya.
Wings with submarginal spots.
HW spot 7 large and black.
Postdiscal spots not aligned.
HW with 2 tornal spots in space 1b which may unite; no spot in space 1a.
Ground white.
https://www.gbif.org/occurrence/2847200102
https://www.gbif.org/occurrence/2847200112
https://www.gbif.org/occurrence/2847200120
Added. Similar to the above.
Plautella cossaea.
Spots are large and rounded.
Submarginal spots largely separated.
HW postdiscal spots closer to the submarginals.
Ground darkish.
https://www.gbif.org/occurrence/2847200222
https://www.gbif.org/occurrence/2847200189
https://www.gbif.org/occurrence/2847200224
https://www.gbif.org/occurrence/4145705754
